How to Choose the Best Audio Intercom System in 2025

In today’s fast-paced world, effective communication and robust security are top priorities for both residential and commercial properties. Whether you’re a homeowner or property manager looking to upgrade your entry system or a business owner aiming to improve communication across departments, an audio intercom system can be an indispensable tool.

This article will walk you through what an audio intercom is, explore the various types available, list key features to consider, and review some top audio intercom products—including five audio-only models and a modern option that integrates video, Swiftlane.

Table of Contents

• Types of Intercom Systems
• Key Audio Intercom Features to Consider
• Top 6 Audio-Only Intercom Products
• Why Video Intercoms over Audio-Only Systems
• Swiftlane: A Modern Intercom Solution with Video Integration

Types of Intercom Systems

When choosing an intercom system, understanding the differences among the various types is essential to match the system with your needs.

One-Way Audio (Public Address or PA Systems)

One-way audio intercom systems, often referred to as PA systems, are designed for broadcasting messages from a single source to multiple receivers. These are ideal for environments where announcements need to reach a wide audience—think retail stores, schools, hospitals, or large office complexes. Because they only send sound in one direction, PA systems are generally simpler and more cost-effective for scenarios where interactive communication isn’t required.

• Audio transmission in one direction (no talkback feature).
• Can be wired or wireless, depending on the model.
• Products are often modular: Mix and match different microphones, amplifiers, and speaker systems.
• Commonly used in commercial, industrial, and security applications.
• May include basic features like volume control and remote activation.
• Usually includes a base station with a microphone, an exchange to route the announcement to specific zones, and a variety of output/speaker device options.
• Many systems can play background music when not being used for communications.

Use Cases for One-Way Intercom Systems

1. Public Announcements – Used in schools, hospitals, and airports to make announcements to large groups.
2. Security Systems – Installed at entrances to allow security personnel to communicate with visitors.
3. Drive-Thrus & Service Windows – Fast-food restaurants, pharmacies, and banks use them for customer instructions, but most use 2-way intercoms instead.
4. Emergency Alerts – Used in government buildings and industrial facilities for emergency broadcasts.
5. Retail & Customer Service – Stores use them to page employees or make promotional announcements.
6. Residential & Gated Entry – Some homes use them at gates for visitor communication.
7. Hospitals & Healthcare Facilities – Used to provide instructions to patients or direct visitors.

Two-Way Audio Intercom Systems

Two-way audio intercoms are designed for interactive communication. They allow for real-time, bidirectional conversations between two or more points. This type of system is commonly found in residential door entry systems and office settings where it’s crucial to both send and receive messages. Two-way intercoms provide a clear line of communication for verifying identities and coordinating responses in both routine and emergency situations.

• Audio transmission in two directions
• Can be wired or wireless
• Can be “half-duplex” where only one person can talk at a time, like a walkie-talkie
• Can be “full-duplex” where both parties can talk simultaneously, like a telephone
• Commonly used as part of a building access control system, with an intercom located at the front door and substations located inside tenant units.
• Some two-way intercoms piggyback on the landline telephone system – sometimes known as call boxes.
• Modern two-way intercoms communicate over the Internet and are sometimes called “smart intercoms”. 

Use Cases for Two Way Intercom Systems

• Front door access control (i.e., call boxes, telephone entry systems, building intercoms) that connect visitors at the front door with tenants and residents.
• Vehicle access points such as driveway and garage gates to control traffic flow and parking access.
• Inter-department communications in commercial or industrial settings or facilities like schools.

Intercoms with Video Integration

As technology has advanced, many modern intercom systems now include video capabilities along with audio. These video intercoms not only let you hear your visitor but also see them, offering an extra layer of security and convenience. They are particularly useful for high-security properties or upscale residential buildings. Modern video intercoms often feature touchscreen interfaces, remote monitoring via smartphone apps, and even advanced functions like facial recognition.

• Generally include two-directional audio.
• Video can be one-way where tenants see the person at the door, or two-way where both parties see each other.
• Provides enhanced security over audio-only systems (tenants can see who is really at the door).

Use Cases for Video Intercoms

• Visual verification: See who is at the door and verify their identity before granting access.
• Commercial uses: Greet guests or customers personably before granting building access.
• Virtual door man: Use staff in a central location to manage multiple building doors virtually.

Key Audio Intercom Features to Consider

When selecting an intercom system, it’s important to evaluate a range of features to ensure that the system meets your specific requirements:

• Audio Quality: Look for systems that provide clear, crisp sound with minimal distortion. High-quality microphones and speakers are a must.
• Range and Coverage: Ensure that the system can cover all the areas you need—whether it’s a single building or multiple structures.
• Connectivity Options: Decide whether a wired or wireless system is best for your situation. While wired systems often provide more stable connections, wireless models offer installation flexibility and are often less expensive. Wireless systems can usually also be answered from anywhere by routing calls to a smartphone app.
• Integration Capabilities: Modern intercom systems can often be integrated with other security devices, such as door locks and surveillance cameras. This enhances overall security and offers a more unified solution.
• Ease of Installation and Use: A user-friendly interface and straightforward installation process are essential, especially if you plan to install the system yourself.
• Durability and Weather Resistance: For outdoor installations, ensure the intercom is built to withstand varying weather conditions.
• Customization Options: Features such as call history, volume controls, and multi-channel communication can add significant value.
• Power Options: Consider the system’s power source—whether it’s battery-operated with long life or hardwired with a backup option for power outages.
• Cost and Warranty: Finally, balance your budget with the system’s features, and check for a solid warranty and after-sales support.

Top 6 Audio-Only Intercom Products

For those who are focused on a reliable audio-only solution, here are five products that have established a strong reputation in the market. Because one-way audio systems tend to be modular, able to mix and match components from different manufacturers, we focus our reviews on two-way audio intercoms that provide all-in-one systems, especially for building entryways.

1. Aiphone LEF Series

Aiphone is a leader in intercom technology, and its LEF series stands out for its reliability and simplicity. These systems are designed for both residential and commercial use, offering crystal-clear audio transmission and a robust build. The Aiphone LEF Series is known for its easy integration with existing security systems and user-friendly design, making it a top choice for those who want dependable performance without unnecessary complications.

Best for: Small business, office, or security use.

2. Comelit Audio Intercom

Comelit’s audio intercom systems are renowned for their exceptional sound quality and modern aesthetics. These systems are engineered for environments that demand clear and consistent communication, making them popular in modern office settings. The Comelit Audio Intercom offers straightforward installation and an intuitive interface, ensuring that users can quickly master its operation and integrate it seamlessly into their security setup. Comelit also offers an array of products with video integration.

Best for: Mid-size multi-tenant residential, high-quality design

3. Linear Audio Intercom System

The Linear Telephone Entry System is designed with flexibility and scalability in mind. Its modular architecture allows for easy expansion, making it particularly suitable for larger commercial installations. Users appreciate its durability and the consistent clarity of its audio output, which ensures that messages are transmitted accurately across multiple zones without interference.

Best for: systems that use traditional landline telephone lines for connectivity

4. Bticino 2-Way Audio Intercom

Bticino is synonymous with stylish design and modern functionality. Their 2-way audio intercom kits are celebrated for delivering superior sound quality in a sleek, contemporary package. Bticino’s systems offer versatile connectivity options—both wired and wireless—ensuring reliable performance regardless of the installation environment. Their intuitive design makes them a favorite among users who value both aesthetics and functionality.

Best for: Single-family and two-family homes

5. TCS Audio Intercom System

The TCS Audio Intercom System is recognized for its robust construction and ease of use. It’s a practical solution for both small businesses and residential applications, providing clear communication with minimal setup fuss. TCS intercoms are known for their longevity and low maintenance requirements, offering an excellent balance between performance and cost-effectiveness.

Best for: Small multi-family residential buildings

6. Doorking 90 Series Entry System

Doorking is a well-established brand for building call boxes. Its 90 Series audio intercom system can use ordinary telephone lines, cellular, or Wi-Fi connectivity. Doorking call boxes are known for their robust stainless steel housing that withstands the elements.  A built-in digital director can handle thousands of units and users. These systems also handle multiple entry methods including RFID cards or key fobs.

Best for: Large multi-tenant residential buildings

Why Video Intercoms over Audio-Only Systems

A video intercom system offers significant advantages over an audio-only system, making it a smarter and more secure choice for both residential and commercial properties. The most compelling benefit is enhanced security—seeing a visitor before granting access helps prevent unauthorized entry and reduces the risk of fraud or forced entry.

Video intercoms also improve communication clarity by eliminating misunderstandings that can occur with voice-only systems, especially in noisy environments. Remote access features allow users to see and communicate with visitors through a smartphone or tablet, adding convenience for homeowners and businesses.

Additionally, video logs provide a visual record of visitors, which can be useful for monitoring and security purposes. In shared spaces like apartment complexes, video intercoms improve tenant safety and management efficiency. Ultimately, a video intercom enhances peace of mind, convenience, and security—making it the superior choice over traditional audio-only systems.

Swiftlane: A Modern Intercom Solution with Video Integration

While audio-only intercom systems provide reliable communication, modern security challenges often call for additional layers of verification. Swiftlane Video Intercom is an innovative solution that integrates video capabilities with traditional audio functionality, giving you the best of both worlds.

Key Features of Swiftlane:

• Enhanced Security: Swiftlane’s video integration allows users to visually verify the identity of visitors before granting access. This added feature is especially important in high-security environments or upscale residential properties.
• Smart Connectivity: With cloud connectivity and remote access via smartphone or tablet, Swiftlane allows you to monitor and control your access points from virtually anywhere. This remote capability is invaluable for those who travel frequently or manage multiple properties.
• User-Friendly Interface: Designed for modern users, Swiftlane features a touchscreen interface that simplifies navigation and operation. Its intuitive design means that users can quickly learn how to manage the system, even if they’re not tech-savvy.
• Advanced Biometrics: Beyond standard audio and video, Swiftlane offers advanced features such as facial recognition. This technology enhances security by ensuring that only authorized individuals are granted access.
• Seamless Integration: Swiftlane can be integrated with other security systems, such as door locks and surveillance cameras, creating a comprehensive security network that can be controlled from a single interface.
• Ease of Installation: Despite its advanced functionalities, Swiftlane is designed to be easy to install, making it a practical option for both new constructions and retrofits.